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The Goodman 20162903 Primary Limit Switch is a genuine OEM safety control engineered for the GMV951155DXA and compatible Goodman/Amana gas furnaces. This normally-closed thermal limit monitors heat-exchanger and plenum temperatures, opening the burner circuit if the furnace overheats due to restricted airflow, a dirty filter, or blower failure. Replacing a failed limit with the exact OEM part restores reliable, code-compliant high-temperature protection.
Our OEM 20162903 is calibrated to Goodman's exact 150°F trip point and mounting footprint, ensuring the safety circuit behaves as the furnace was engineered. Generic universal limits may differ in cutout temperature, bracket geometry, or terminal orientation — leading to nuisance lockouts or improper protection. For a safety component, we recommend OEM.
Easy (1/5). Two mounting screws and two spade terminals. Always shut off gas and power before service. If a limit trips repeatedly, diagnose the airflow root cause — do not bypass the switch. Professional installation recommended for gas appliances.
Compatible with GMV951155DXA. Verify your existing part number before ordering.